1.14 WATER HEATER COMPONENTS.
Key:
1 - Sealed chamber
2 - Fan
3 - DHW heat exchanger
4 - Ignition/detection electrode
5 - Gas valve
6 - Flue pressure switch
7 - Safety thermostat
8 - Flue hood
9 - DHW probe (hot water output)
10 - Combustion chamber
11 - Burner
12 - Gas manifold
13 - Flow limiter
14 - One-way valve
15 - Flow rate meter
16 - Domestic water inlet cock
17 - DHW probe (cold water input)
13 - IE
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